1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
package tim.prune.undo;
import tim.prune.I18nManager;
import tim.prune.UpdateMessageBroker;
import tim.prune.data.DataPoint;
import tim.prune.data.Track;
import tim.prune.data.TrackInfo;
/**
* Undo cut and move of a track section
*/
public class UndoCutAndMove implements UndoOperation
{
/** Start and end indices of section */
private int _startIndex, _endIndex;
/** Index of move to point */
private int _moveToIndex;
/** First track point in section, next track point after where it was */
private DataPoint _firstTrackPoint = null, _followingTrackPoint = null;
/** Next track point after where it's being moved to */
private DataPoint _moveTrackPoint = null;
/** Segment flags for these points */
private boolean _firstSegmentFlag, _followingSegmentFlag, _moveToSegmentFlag;
/**
* Constructor
* @param inTrack track object for copying segment flags
* @param inStart start index of section
* @param inEnd end index of section
* @param inMoveTo index of moveTo point
*/
public UndoCutAndMove(Track inTrack, int inStart, int inEnd, int inMoveTo)
{
_startIndex = inStart;
_endIndex = inEnd;
_moveToIndex = inMoveTo;
// Look for first track point in section to be moved, store flag
_firstTrackPoint = inTrack.getNextTrackPoint(inStart);
if (_firstTrackPoint != null) {
_firstSegmentFlag = _firstTrackPoint.getSegmentStart();
}
// Look for following track point, store flag
_followingTrackPoint = inTrack.getNextTrackPoint(inEnd + 1);
if (_followingTrackPoint != null) {
_followingSegmentFlag = _followingTrackPoint.getSegmentStart();
}
// Look for next track point after move point, store flag
_moveTrackPoint = inTrack.getNextTrackPoint(inMoveTo);
if (_moveTrackPoint != null) {
_moveToSegmentFlag = _moveTrackPoint.getSegmentStart();
}
}
/**
* @return description of operation including number of points moved
*/
public String getDescription()
{
return I18nManager.getText("undo.cutandmove") + " (" + (_endIndex - _startIndex + 1) + ")";
}
/**
* Perform the undo operation on the given Track
* @param inTrackInfo TrackInfo object on which to perform the operation
*/
public void performUndo(TrackInfo inTrackInfo) throws UndoException
{
// Cut and move the section back to where it was before
int numMoved = _endIndex - _startIndex + 1;
// Calculate new positions depending on whether section was moved forward or backward
if (_startIndex > _moveToIndex)
{
inTrackInfo.getTrack().cutAndMoveSection(_moveToIndex, _moveToIndex + numMoved - 1, _startIndex + numMoved);
}
else
{
inTrackInfo.getTrack().cutAndMoveSection(_moveToIndex - numMoved, _moveToIndex - 1, _startIndex);
}
// Restore segment start flags
if (_firstTrackPoint != null) {
_firstTrackPoint.setSegmentStart(_firstSegmentFlag);
}
if (_followingTrackPoint != null) {
_followingTrackPoint.setSegmentStart(_followingSegmentFlag);
}
if (_moveTrackPoint != null) {
_moveTrackPoint.setSegmentStart(_moveToSegmentFlag);
}
inTrackInfo.getSelection().clearAll();
UpdateMessageBroker.informSubscribers();
}
}
|
